Packing box for oil wells



Au 5. 19249 L53J82 J. BARNES PACKING- BOX FOR OIL WELLS Filed Oct. 1, 1923 Z6 E 7 1 -71 zjllll 1 S i? 1 a X7 Z0 WITNESSES INVENTOR ffZJM Efohnflarnes r 4 v I 5% ATTORNEYS Patented Aug. 5, 1924.

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JOHN BARNES, F BURKBURNETT, TEXAS.

PACKING BOX FOB OIL WELLS.

Application filed October 1, 1923: Serial No. 665,908.

T 0 all whom it may concern Be it known that I, J OHN BARNES, a citizen of the United States, and resident of l Burkburnett, in the county of Wichita and State of Texas, have invented certain new and useful Improvements in Packing Box for Oil Wells, of which the following is a specification.

This invention relates to 'oil well equipment and more particularly to a sealing means for the outlet end of a pumping well.

An important object of this invention is to provide novel means whereby to establish a liquid tight connection between the casing head and the sucker rod so that the leakage of fluid at the outlet end of the well is posi tively prevented.

Also, a further objectis to provide a sealing or packing means for the outlet end of a well having means to resist wear so that frequent replacing of parts is unnecessary.

A further object is to provide a packing box for oil wells which is of highly simplified construction, durable in use and cheap to manufacture.

Other objects and advantages will be apparent during the course of the following description.

In the accompanying drawing forming a part of this application and in which like numerals are employed. to designate like parts throughout the same,

Figure 1 is a side elevation ofthe improved liquid retaining means in-use.

Figure 2 .is a vertical sectional view through the invention,

Figure 3 is a horizontal. sectional view taken on line '3 -3 of Figure 2.

In the drawing wherein for the purpose of illustration is shown a preferred embodi-' ment of the invention the numeral 5 designates a plunger having a ground fit in a liner 6 and as illustrated in Figure 1 the plunger 5 is provided intermediate its ends with a universal joint 7 to allow the ump jack to lean in any direction without c anging the position of'the plunger. More specifically when the pump jackhas been in use for quite a while it will lean away from its original position and the universal joint allows the ground portion of the plunger to remain in its original position. Therefore, when the pump jack leans the plunger will not wear one side of a liner 8 within which it operates, as such wear, if any, will be uniformly distributed. The plunger 5 has the ground fitwith the liner 8 so as to positively prevent passage of oil and the iner is of a length to positively prevent the passage of o 1l around the plunger in case wear takes place. The working space. betweenthe liner 8 and the plunger 5 will be about 3/1000ths of an inch and not more than 5/1000ths of an inch in any case and in carrying out the invention the lower portion of the plunger 5 is reduced and is threaded as indicated at 10 for connection with the upper joint of the sucker rod to which the usual travelling valve is connected. The ground portion of the plunger 5 is provided with a plurality of spaced annular grooves 11 which constitute oil pockets by means of which a smalLquantity of oil 1s carried up and down in the liner 8 to lubricate the exterior of the plunger and interior of the liner 8.

Figure 2 illustrates that the upper portion of the liner 8 is engaged with a nut 14 while the lower end of the liner 8 is engaged with a gasket 15 held in place by means of a cap 16. The cap is threaded on the liner housing and support 17 and when the ca is tightened the gasket 15' will press tig tly against the liner 8 and thereby positively prevent the movement of oil between the liner 8 and the liner housing and support. In carryin out the invention the liner housing anc support is in the nature of a tube which freely receives the liner 8 and which has its upper end threaded into the nut 14. A suitable jam nut is threaded on the upper portion of the tubular liner housing and support 17 so as to hold the member 17 against disconnection during the pumping of the well. Of course the u per portion of the tubular housing and iner support 17 is threaded into a socket in the underside of the nut 14. Also the usual tubing freely receives the housing and is connected at its upper end with a head 26 having a blow pi e 27 extended to a suitable point of disc arge such as a tank. The tubing 25 extends a, substantial distance below the liner housing and support 17 and has its lower portion reduced as indicated at 26 for connection with the standard construction. ,g

With reference to the foregoing description it will be apparent that a packing box constructed in accordance with this invention will last indefinitely and the elements of the same will not need frequent replacing or renewal. Also the presence of the universal joint will absolutely prevent the plunger from wearing one side of the liner 8 more rapidly than the other side.

It is to be understood that the form of the invention herewith shown and described is to be taken as a preferred example of the same and that such minor changes in arrangement and construction of parts may be made as will remain within the spirit of the invention and the scope of what is claimed.

Having thus described the invention, what is claimed is 2- 1. The combination with a plunger, of a liner having a ground fit with the plunger, a liner housing and support freely receiving said liner, and a cap threaded on the lower portion of said housing and supporting said liner.

2. The combination with a plunger, of a liner having a ground fit with the plunger, a liner housing and support freely receiving said liner,- a cap, threaded-on the lower portion of said housing and supporting said liner, and a head engaged by the upper end of said liner and having threaded engagement with said housing.

3. The combinationwith a plunger, of

a liner having a ground fit with the plunger,

a liner housing and support freely recelving said liner, a cap threaded on the lower portion of said housing and supporting said liner, and a head engaged by the upper end of said liner and having threaded engagement with said housing, and a gasket confined between said cap and said liner and establishing a liquid tight connection between the liner and the housing.

4. The combination with a plunger, of a liner having a ground fit with the plunger,

a liner housing and support freely receiving said liner, a cap threaded on the lower portion of said housing and supporting said liner, and a head engaged by t e upper end of said liner and having threaded engagement with said vhousing, a gasket confined liner having a ground fit with the plunger a liner housing and support freely receiving said liner, a cap threaded on the lower portion of said housing and supporting said liner, and a head engaged by the upper end of said liner and having threaded engagement with said housing, a gasket coufined between said cap and said liner and establishing a liquid tight connection between the liner and the housing, said plunger being provided with annular oil pockets, and a tubular'body connected to said head and freely receiving said liner housing and terminating a substantial distance below the same, said "plunger being provided above said head with a universal joint,

6. The combination with a plunger, of a liner having a ground fit with the plunger. a liner housing receiving and supporting said liner, and means secured to the liner {rousing and supporting the first mentioned iner.

7. The combination with a tubing, a plunger, a liner having a ground fit with the plunger, a liner housing receiving and supporting said liner, and means for removably supporting the liner, housing and likewise the liner within the tubing.

' JOHN BARNES. 

